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Message-ID: <3D21A132.4070608@web.de>
Date: Tue, 02 Jul 2002 14:48:50 +0200
From: Chantal Ackermann <chantal.ackermann@web.de>
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To: pgsql-sql@postgresql.org
Subject: Temporary table instead of repeated joins
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hello all,

in my program I have to check for a certain combination of data before I 
make an insert. The check is a select statement with a join and a 
function call. Now, I wonder if I could gain performance if I would 
create a temporary view that contained this join and the function call 
and the other constraints. There will be frequent inserts into the 
underlying tables so I can't use a real cache that is only updated once 
in a while (say, a temporary table).

So would a select on the view be faster or is the view really just some 
shortcut for the programmer but the database behaviour actually stays 
the same?

Thanks for any hints
Chantal